Dipping container for explosive cartridges



May 3l 1927.

W. H. MARSHALL ET AL DIPPING CONTAINER FOR EXPLOSIVE CARTRIDGES Filed Oct. 25, 1924 if!!! I (lll figli 'lllllllllllllllllfl bnf( Is/'Tommi Patented May 31, 1927.

UNITED STATES PATENT critica.

'WILLIAM I-I. MARSHALL, ROBERT J'. KILLGORE, AND LUTHER E. BEDORTHA, OF DEN- VER, COLORADO, ASSIGNORS,'BY MESNEASSIGNMENTS, TU PUROX COMPANY,

DENVER, COLORADO, A CORPORATION OF COLORADO.

DIPPING CONTAINER FOR `EXPLOSTVE CARTRIDGES.

Application inea october 25, 1924. serial No. '745,824.

This invention relates to the art of blasting with liquid oxygen, and it particularly concerns dipping containers which may be voli especial applicability in this art.

At the present time explosives 'known as liquid oxygen cartridges are used* extensively in blasting because ofthe safety thereot in transportation and usage. The cartridges contain a certain absorptive material which must be saturated with liquid oX- ygeii before they become explosive. .These cartridges, according to general practice, are saturated with liquid oxygen on the job in what are commonly called dipping containers.

It is an object of this invention toprovide a dipping container which is convenient 'for a workman to carry from place to place, as he is engaged in placing the cartridges for. blasting.

Devices of this character are usually provided with a cartridge dipping` chamber which is very thoroughly heatinsulated so as to reduce as much as possible evaporation of the liquid Ioxygen contained therein. t

It is an object of' this invention to provide means 'facilitating the introduction vof liquid oxygen into the'cartridge dipping'chamber ot the device. i, ,i

It is a still further object ot this inven-` tion to provide means for insuring a thorcugh and complete saturation ot the cartridges. y

` lt is another object ot the invention to provide a swingable cover arrangement' which allows the ready insertion' ot c.ar ti-idges to he saturated into the' dipping` chamber. y i

It `is yanother object of the' invention to provide an evaporating gasoutlet, having means :tor detlecting gas as it escapes from the dipping chamber, the purpose of this being to prevent the gas from striking the hand et the operator carrying the device.

Other objects and the specic advantages oit the invention will be made evident hereinafter. i

Referring to the drawings which are for illustrativepurposes only, p y

Fig. 1 is an elevational sectional view of a dipping container embodying the features et .the invention, taken substantially on a` line indicated at 1-1 of Fig. 2.

Fig. 2 is a plan view of Fig. l

As shown in the drawings an inner circularwall 11 provides a dipping chamber 12 which is arranged to receive liquid oxygen explosives for the saturation thereof. Around and below the chamber 12 `is an evacuated space 13, which is provided bethe liquid oxygen in the chamber 12. The f bieatheijs 2O ai'e provided in the bottom 15 which furnishes Communication between the evacuated space 13 and the absorp'tive space 18. Between the intermediate wall la and an exterior wall 21 and below the bottom 16 is placed an insulating material 22 which assists the evacuated spacer13 in preventing heat from reaching thedipping chamber l2. The lower portion ot' the wall 21 is ared at 23 so as to provide a base `tor the container. In the upper end oi the wallll there outwardly entends a radial wall 211 andi from the upper end ot the intermediate wall 14; 'there outwardly extends a radial flange 25, 'this flange being secured as shown at 2G to the outer wall 21.

. F or closing the top of the dipping chamber 12, we provide a cover 28 which hinges at 29 and which may be provided with a suitable locking arrangement BO tor closing the cover 28 tightly against a suitable gasket 32. p

To facilitate manual transportation of the container, there is provided a suitable bail which is secured tothe exterior wall 21 ot the container by means of suitable fixtures 34. To contribute to the facile pouring of liquid oxygen into the chamber 12, we provide an ingression member in the torni ot a funnel 35, having a pouring openi g 36. Extending 'from the `iiunnel por tion B5 through the cover 28 to the interior of the chamber 12 is a spout portion 37. For insuring` a complete .saturation of the cartridges which may be placed in the chamher 12, we prnvide a means iii the formel a tube 38 1{vliioh may be secured on the inside,-

oi' the wall l1 in any suitable manner, this tube being for the purpose of directing the liquid oxygen as it enters through the spout Y 37 totheuextreine bottom of the chamber l2.

Gas evaporating from the liquid oxygen in thc chamber 12 may egress through an exit tube Ll0, wliichis secured toand extends through the top to the exterior thereof, as shown in Fig. l. To prevent the gas ilroni striking a hand ot a `workmancarrying the receptacle by thebail 33, we provide a dcilector member in `the forni ot an inverted dish i2, which is secured above the exit tube at), as shown in Fig. l, Vby means o'l' suitable strap members e3.

The Vuse o our device may tially as follows: f y

On tle job, cartridges may he placed into the chaniben lQat'ter first releasing the lock 3() and swinging the cover 28 on the hinge` 29 out oi" closing position into opened position. After the cartridges are placed in the chainber l2, tliecover is again closed as in Fig. l,

` and liquid oxygen may be introduced into by the inverted dishlQ. It `will be seen the chanjiber. This is done by pouringwthe liquid oxygen into the tunnel '35 through the opening 3G, the `liquid passing through the spout 37 through the tube 38 to the extreme bottom of the `container l2 filling the chamber lroin bottoni to top. Any gas" evaporating from the liquid oxygen may escape` through the tube a() and is deflected y that` this dish #l2 deflects the gasesin such anianner thatthey cannot strike the hand of a person carrying the containerby the bail.

i-i'fter.thecartridges are sufliciently saturatedivith liquid oxygen, they are removed therefrom and inserted into cartridge rcceiving bores along with" the necessaiy detonuting caps. It should be iinderstoodthat these bores are sometimes a distance apart, and it is essential that a dipping ychaniber beprovided which may be readily transported from bore to bore.

From the foregoing description it Will readily be seen that the device described may be very readily and conveniently carried lroni place to place by a workman.

The device is vcry thoroughly insulated against heat by the evacuated chamber 13 and the insulated portion 22. The pouring arrangement described provides avery convenient means for the pouring of the oxygen and insures that the cartridges will be thoroiighly saturated by directing the liquid to the extreme bottoni of the chamber l2. By conducting the liquid oxygen directly to the bottoni of the chamber, the absorptive material is Iirst cooled, which cooling gas would escape unused and wasted.

be substanp said chamber.

immediately causes an absorption of any gases in the space 12S, thereby creating a better vacuum and a more etiicient insula tion. Another advantage of conducting the liquid tothe bottom is that the gases evaporating therefrom pass ariaiiidand permeate the cartridges, and the cooling values are utilized.y It will be seen that the pouring ol the liquid over the cartridges would cause an excessive eviqiorization and most of the A ready insertion and removal ol the cariridv'cs irovidcd bv the sivincablc cover b i t b arrangement ol" thc device. A worlii'ian iarrying the container is protected against the cold escaping gases by `thc novel `torni oit deflcctor arrangement of the invention.

"()iir invention has another pronounced superiority which saves considerable time,

` labor and liquid oxygen. Aln open containers, the cartridges will naturally :float and bob up when the liquid 'is poured into the contahier.` The necessity of `Eorciiqg the car tridges back in placei'akes time and labor, and causes interference to the pouring of the liquid which allows excessive e faporation tiereoi. `In our device,` the cover of the dipping container retains the cartridges in 'place and, therefore, the labor and time consumed in forcing them back into place is obviated, this also saving liquid as evaporation is reduced vvhen tinieis saved.

We claim as our invention:

l. A dipping container for explosive cartridges comprisinfr; Walls forming a dipping chamber; a hinged cover for said container; a member carried by said cover through which liquid oxygen may be in troduced into said dipping chamber; and

ineans for directing said liquid oxygen to the bottoni of said chamber.`

2. A dipping container for explosive cartridges as in claim 1 in which said means comprises a tube n'iounted on the wall ot saidchainber, said tube extending troni said nien'iber to a point adjacent to the liiottom ot `3. A dipping container for explosive cartridges comprising: Walls forming" a dipping chamber; a coverfor closing an open endlof saiddipping chamber; a tube mounted on a side ivall loit said dipping chamber for directing a fluid to the lower end of said dipping container; and a funnel having a spout carried by said cover, said spout aligning with said tube when said cover closes the open end oi said dipping container. Y d y Ll. A dipping container `:torexplosive cartridges comprising: Walls forming a dipping chamber; Walls :tormingan evacuated space around `said dipping chaii'iber; means for absorbing any gas which may be present in said evacuated space; and means for introducing a liquefied gas into said chamber so that it Will be directed into cooling relation With said absorbing means immediately upon entering said chamber.

5. A dipping container for explosive cartridges comprising: Walls forming a dipping chamber; Walls forming an evacuated space around said dipping chamber; absorptive material carried between said .dipping chamber and said evacuated space in communication With said evacuated space; and means for introducing a liqueiied gas into said chamber so that it Will be directed into juxtaposition With said absorptive material immediately upon entering said chamber.

6. A dipping container for explosive cartridges comprising: Walls forming a dipping container; means for introducing a liquid gas into said dipping container, walls forming an outlet through which gas may pass from said dipping chamber; a bail whereby said dipping container may be carried; and a deiiector for delecting gas passing through said outlet so that it Will not contact a personshand carrying said dipping container by means of said bail.

7. A Idipping container for explosive cartridges comprising: Walls forminga dipping container; means for introducing a liquid gas into said dipping container; walls forming an outlet through Which gas may pass :from said dipping chamber; a

bail whereby said dipping container may be carried; and an inverted dish-shaped de-` lector for delecting gas passing through said outlet so that it Will not Contact a persons hand carrying said dipping container by means of Said bail,

8. A dipping container for explosive cartridges comprising: Walls forming a dipping chamber., said dipping chamber having an open end through which articles may be placed therein; a cover for closing said open end of said dipping chamber after said articles have been placed in said dipw ping chamber; means carried by said cover Yfor introducing a liquid gas into said dipping chamber atter said articles have been `placed in said dipping chamber and said cover has been placed in position to close said open end of said dipping chamber; a

october, 1924.

vWILLIAM H. MARSHALL. ROBERT J. KILLGORE. LUTHER E. BEDORTHA. 

